summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/netronome/nfp/flower/main.c
blob: 83eaa5ae3cd4f5adbf04475811ca91da82ebf4f2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */

#include <linux/etherdevice.h>
#include <linux/lockdep.h>
#include <linux/pci.h>
#include <linux/skbuff.h>
#include <linux/vmalloc.h>
#include <net/devlink.h>
#include <net/dst_metadata.h>

#include "main.h"
#include "../nfpcore/nfp_cpp.h"
#include "../nfpcore/nfp_nffw.h"
#include "../nfpcore/nfp_nsp.h"
#include "../nfp_app.h"
#include "../nfp_main.h"
#include "../nfp_net.h"
#include "../nfp_net_repr.h"
#include "../nfp_port.h"
#include "./cmsg.h"

#define NFP_FLOWER_ALLOWED_VER 0x0001000000010000UL

#define NFP_MIN_INT_PORT_ID	1
#define NFP_MAX_INT_PORT_ID	256

static const char *nfp_flower_extra_cap(struct nfp_app *app, struct nfp_net *nn)
{
	return "FLOWER";
}

static enum devlink_eswitch_mode eswitch_mode_get(struct nfp_app *app)
{
	return DEVLINK_ESWITCH_MODE_SWITCHDEV;
}

static int
nfp_flower_lookup_internal_port_id(struct nfp_flower_priv *priv,
				   struct net_device *netdev)
{
	struct net_device *entry;
	int i, id = 0;

	rcu_read_lock();
	idr_for_each_entry(&priv->internal_ports.port_ids, entry, i)
		if (entry == netdev) {
			id = i;
			break;
		}
	rcu_read_unlock();

	return id;
}

static int
nfp_flower_get_internal_port_id(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_flower_priv *priv = app->priv;
	int id;

	id = nfp_flower_lookup_internal_port_id(priv, netdev);
	if (id > 0)
		return id;

	idr_preload(GFP_ATOMIC);
	spin_lock_bh(&priv->internal_ports.lock);
	id = idr_alloc(&priv->internal_ports.port_ids, netdev,
		       NFP_MIN_INT_PORT_ID, NFP_MAX_INT_PORT_ID, GFP_ATOMIC);
	spin_unlock_bh(&priv->internal_ports.lock);
	idr_preload_end();

	return id;
}

u32 nfp_flower_get_port_id_from_netdev(struct nfp_app *app,
				       struct net_device *netdev)
{
	struct nfp_flower_priv *priv = app->priv;
	int ext_port;
	int gid;

	if (nfp_netdev_is_nfp_repr(netdev)) {
		return nfp_repr_get_port_id(netdev);
	} else if (nfp_flower_internal_port_can_offload(app, netdev)) {
		ext_port = nfp_flower_get_internal_port_id(app, netdev);
		if (ext_port < 0)
			return 0;

		return nfp_flower_internal_port_get_port_id(ext_port);
	} else if (netif_is_lag_master(netdev) &&
		   priv->flower_ext_feats & NFP_FL_FEATS_TUNNEL_NEIGH_LAG) {
		gid = nfp_flower_lag_get_output_id(app, netdev);
		if (gid < 0)
			return 0;

		return (NFP_FL_LAG_OUT | gid);
	}

	return 0;
}

static struct net_device *
nfp_flower_get_netdev_from_internal_port_id(struct nfp_app *app, int port_id)
{
	struct nfp_flower_priv *priv = app->priv;
	struct net_device *netdev;

	rcu_read_lock();
	netdev = idr_find(&priv->internal_ports.port_ids, port_id);
	rcu_read_unlock();

	return netdev;
}

static void
nfp_flower_free_internal_port_id(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_flower_priv *priv = app->priv;
	int id;

	id = nfp_flower_lookup_internal_port_id(priv, netdev);
	if (!id)
		return;

	spin_lock_bh(&priv->internal_ports.lock);
	idr_remove(&priv->internal_ports.port_ids, id);
	spin_unlock_bh(&priv->internal_ports.lock);
}

static int
nfp_flower_internal_port_event_handler(struct nfp_app *app,
				       struct net_device *netdev,
				       unsigned long event)
{
	if (event == NETDEV_UNREGISTER &&
	    nfp_flower_internal_port_can_offload(app, netdev))
		nfp_flower_free_internal_port_id(app, netdev);

	return NOTIFY_OK;
}

static void nfp_flower_internal_port_init(struct nfp_flower_priv *priv)
{
	spin_lock_init(&priv->internal_ports.lock);
	idr_init(&priv->internal_ports.port_ids);
}

static void nfp_flower_internal_port_cleanup(struct nfp_flower_priv *priv)
{
	idr_destroy(&priv->internal_ports.port_ids);
}

static struct nfp_flower_non_repr_priv *
nfp_flower_non_repr_priv_lookup(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_flower_priv *priv = app->priv;
	struct nfp_flower_non_repr_priv *entry;

	ASSERT_RTNL();

	list_for_each_entry(entry, &priv->non_repr_priv, list)
		if (entry->netdev == netdev)
			return entry;

	return NULL;
}

void
__nfp_flower_non_repr_priv_get(struct nfp_flower_non_repr_priv *non_repr_priv)
{
	non_repr_priv->ref_count++;
}

struct nfp_flower_non_repr_priv *
nfp_flower_non_repr_priv_get(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_flower_priv *priv = app->priv;
	struct nfp_flower_non_repr_priv *entry;

	entry = nfp_flower_non_repr_priv_lookup(app, netdev);
	if (entry)
		goto inc_ref;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return NULL;

	entry->netdev = netdev;
	list_add(&entry->list, &priv->non_repr_priv);

inc_ref:
	__nfp_flower_non_repr_priv_get(entry);
	return entry;
}

void
__nfp_flower_non_repr_priv_put(struct nfp_flower_non_repr_priv *non_repr_priv)
{
	if (--non_repr_priv->ref_count)
		return;

	list_del(&non_repr_priv->list);
	kfree(non_repr_priv);
}

void
nfp_flower_non_repr_priv_put(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_flower_non_repr_priv *entry;

	entry = nfp_flower_non_repr_priv_lookup(app, netdev);
	if (!entry)
		return;

	__nfp_flower_non_repr_priv_put(entry);
}

static enum nfp_repr_type
nfp_flower_repr_get_type_and_port(struct nfp_app *app, u32 port_id, u8 *port)
{
	switch (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port_id)) {
	case NFP_FLOWER_CMSG_PORT_TYPE_PHYS_PORT:
		*port = FIELD_GET(NFP_FLOWER_CMSG_PORT_PHYS_PORT_NUM,
				  port_id);
		return NFP_REPR_TYPE_PHYS_PORT;

	case NFP_FLOWER_CMSG_PORT_TYPE_PCIE_PORT:
		*port = FIELD_GET(NFP_FLOWER_CMSG_PORT_VNIC, port_id);
		if (FIELD_GET(NFP_FLOWER_CMSG_PORT_VNIC_TYPE, port_id) ==
		    NFP_FLOWER_CMSG_PORT_VNIC_TYPE_PF)
			return NFP_REPR_TYPE_PF;
		else
			return NFP_REPR_TYPE_VF;
	}

	return __NFP_REPR_TYPE_MAX;
}

static struct net_device *
nfp_flower_dev_get(struct nfp_app *app, u32 port_id, bool *redir_egress)
{
	enum nfp_repr_type repr_type;
	struct nfp_reprs *reprs;
	u8 port = 0;

	/* Check if the port is internal. */
	if (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port_id) ==
	    NFP_FLOWER_CMSG_PORT_TYPE_OTHER_PORT) {
		if (redir_egress)
			*redir_egress = true;
		port = FIELD_GET(NFP_FLOWER_CMSG_PORT_PHYS_PORT_NUM, port_id);
		return nfp_flower_get_netdev_from_internal_port_id(app, port);
	}

	repr_type = nfp_flower_repr_get_type_and_port(app, port_id, &port);
	if (repr_type > NFP_REPR_TYPE_MAX)
		return NULL;

	reprs = rcu_dereference(app->reprs[repr_type]);
	if (!reprs)
		return NULL;

	if (port >= reprs->num_reprs)
		return NULL;

	return rcu_dereference(reprs->reprs[port]);
}

static int
nfp_flower_reprs_reify(struct nfp_app *app, enum nfp_repr_type type,
		       bool exists)
{
	struct nfp_reprs *reprs;
	int i, err, count = 0;

	reprs = rcu_dereference_protected(app->reprs[type],
					  nfp_app_is_locked(app));
	if (!reprs)
		return 0;

	for (i = 0; i < reprs->num_reprs; i++) {
		struct net_device *netdev;

		netdev = nfp_repr_get_locked(app, reprs, i);
		if (netdev) {
			struct nfp_repr *repr = netdev_priv(netdev);

			err = nfp_flower_cmsg_portreify(repr, exists);
			if (err)
				return err;
			count++;
		}
	}

	return count;
}

static int
nfp_flower_wait_repr_reify(struct nfp_app *app, atomic_t *replies, int tot_repl)
{
	struct nfp_flower_priv *priv = app->priv;

	if (!tot_repl)
		return 0;

	assert_nfp_app_locked(app);
	if (!wait_event_timeout(priv->reify_wait_queue,
				atomic_read(replies) >= tot_repl,
				NFP_FL_REPLY_TIMEOUT)) {
		nfp_warn(app->cpp, "Not all reprs responded to reify\n");
		return -EIO;
	}

	return 0;
}

static int
nfp_flower_repr_netdev_open(struct nfp_app *app, struct nfp_repr *repr)
{
	int err;

	err = nfp_flower_cmsg_portmod(repr, true, repr->netdev->mtu, false);
	if (err)
		return err;

	netif_tx_wake_all_queues(repr->netdev);

	return 0;
}

static int
nfp_flower_repr_netdev_stop(struct nfp_app *app, struct nfp_repr *repr)
{
	netif_tx_disable(repr->netdev);

	return nfp_flower_cmsg_portmod(repr, false, repr->netdev->mtu, false);
}

static void
nfp_flower_repr_netdev_clean(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_repr *repr = netdev_priv(netdev);

	kfree(repr->app_priv);
}

static void
nfp_flower_repr_netdev_preclean(struct nfp_app *app, struct net_device *netdev)
{
	struct nfp_repr *repr = netdev_priv(netdev);
	struct nfp_flower_priv *priv = app->priv;
	atomic_t *replies = &priv->reify_replies;
	int err;

	atomic_set(replies, 0);
	err = nfp_flower_cmsg_portreify(repr, false);
	if (err) {
		nfp_warn(app->cpp, "Failed to notify firmware about repr destruction\n");
		return;
	}

	nfp_flower_wait_repr_reify(app, replies, 1);
}

static void nfp_flower_sriov_disable(struct nfp_app *app)
{
	struct nfp_flower_priv *priv = app->priv;

	if (!priv->nn)
		return;

	nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_VF);
}

static int
nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
			    enum nfp_flower_cmsg_port_vnic_type vnic_type,
			    enum nfp_repr_type repr_type, unsigned int cnt)
{
	u8 nfp_pcie = nfp_cppcore_pcie_unit(app->pf->cpp);
	struct nfp_flower_priv *priv = app->priv;
	atomic_t *replies = &priv->reify_replies;
	struct nfp_flower_repr_priv *repr_priv;
	enum nfp_port_type port_type;
	struct nfp_repr *nfp_repr;
	struct nfp_reprs *reprs;
	int i, err, reify_cnt;
	const u8 queue = 0;

	port_type = repr_type == NFP_REPR_TYPE_PF ? NFP_PORT_PF_PORT :
						    NFP_PORT_VF_PORT;

	reprs = nfp_reprs_alloc(cnt);
	if (!reprs)
		return -ENOMEM;

	for (i = 0; i < cnt; i++) {
		struct net_device *repr;
		struct nfp_port *port;
		u32 port_id;

		repr = nfp_repr_alloc(app);
		if (!repr) {
			err = -ENOMEM;
			goto err_reprs_clean;
		}

		repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
		if (!repr_priv) {
			err = -ENOMEM;
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}

		nfp_repr = netdev_priv(repr);
		nfp_repr->app_priv = repr_priv;
		repr_priv->nfp_repr = nfp_repr;

		/* For now we only support 1 PF */
		WARN_ON(repr_type == NFP_REPR_TYPE_PF && i);

		port = nfp_port_alloc(app, port_type, repr);
		if (IS_ERR(port)) {
			err = PTR_ERR(port);
			kfree(repr_priv);
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}
		if (repr_type == NFP_REPR_TYPE_PF) {
			port->pf_id = i;
			port->vnic = priv->nn->dp.ctrl_bar;
		} else {
			port->pf_id = 0;
			port->vf_id = i;
			port->vnic =
				app->pf->vf_cfg_mem + i * NFP_NET_CFG_BAR_SZ;
		}

		eth_hw_addr_random(repr);

		port_id = nfp_flower_cmsg_pcie_port(nfp_pcie, vnic_type,
						    i, queue);
		err = nfp_repr_init(app, repr,
				    port_id, port, priv->nn->dp.netdev);
		if (err) {
			kfree(repr_priv);
			nfp_port_free(port);
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}

		RCU_INIT_POINTER(reprs->reprs[i], repr);
		nfp_info(app->cpp, "%s%d Representor(%s) created\n",
			 repr_type == NFP_REPR_TYPE_PF ? "PF" : "VF", i,
			 repr->name);
	}

	nfp_app_reprs_set(app, repr_type, reprs);

	atomic_set(replies, 0);
	reify_cnt = nfp_flower_reprs_reify(app, repr_type, true);
	if (reify_cnt < 0) {
		err = reify_cnt;
		nfp_warn(app->cpp, "Failed to notify firmware about repr creation\n");
		goto err_reprs_remove;
	}

	err = nfp_flower_wait_repr_reify(app, replies, reify_cnt);
	if (err)
		goto err_reprs_remove;

	return 0;
err_reprs_remove:
	reprs = nfp_app_reprs_set(app, repr_type, NULL);
err_reprs_clean:
	nfp_reprs_clean_and_free(app, reprs);
	return err;
}

static int nfp_flower_sriov_enable(struct nfp_app *app, int num_vfs)
{
	struct nfp_flower_priv *priv = app->priv;

	if (!priv->nn)
		return 0;

	return nfp_flower_spawn_vnic_reprs(app,
					   NFP_FLOWER_CMSG_PORT_VNIC_TYPE_VF,
					   NFP_REPR_TYPE_VF, num_vfs);
}

static int
nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
{
	struct nfp_eth_table *eth_tbl = app->pf->eth_tbl;
	atomic_t *replies = &priv->reify_replies;
	struct nfp_flower_repr_priv *repr_priv;
	struct nfp_repr *nfp_repr;
	struct sk_buff *ctrl_skb;
	struct nfp_reprs *reprs;
	int err, reify_cnt;
	unsigned int i;

	ctrl_skb = nfp_flower_cmsg_mac_repr_start(app, eth_tbl->count);
	if (!ctrl_skb)
		return -ENOMEM;

	reprs = nfp_reprs_alloc(eth_tbl->max_index + 1);
	if (!reprs) {
		err = -ENOMEM;
		goto err_free_ctrl_skb;
	}

	for (i = 0; i < eth_tbl->count; i++) {
		unsigned int phys_port = eth_tbl->ports[i].index;
		struct net_device *repr;
		struct nfp_port *port;
		u32 cmsg_port_id;

		repr = nfp_repr_alloc(app);
		if (!repr) {
			err = -ENOMEM;
			goto err_reprs_clean;
		}

		repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
		if (!repr_priv) {
			err = -ENOMEM;
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}

		nfp_repr = netdev_priv(repr);
		nfp_repr->app_priv = repr_priv;
		repr_priv->nfp_repr = nfp_repr;

		port = nfp_port_alloc(app, NFP_PORT_PHYS_PORT, repr);
		if (IS_ERR(port)) {
			err = PTR_ERR(port);
			kfree(repr_priv);
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}
		err = nfp_port_init_phy_port(app->pf, app, port, i);
		if (err) {
			kfree(repr_priv);
			nfp_port_free(port);
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}

		SET_NETDEV_DEV(repr, &priv->nn->pdev->dev);
		nfp_net_get_mac_addr(app->pf, repr, port);

		cmsg_port_id = nfp_flower_cmsg_phys_port(phys_port);
		err = nfp_repr_init(app, repr,
				    cmsg_port_id, port, priv->nn->dp.netdev);
		if (err) {
			kfree(repr_priv);
			nfp_port_free(port);
			nfp_repr_free(repr);
			goto err_reprs_clean;
		}

		nfp_flower_cmsg_mac_repr_add(ctrl_skb, i,
					     eth_tbl->ports[i].nbi,
					     eth_tbl->ports[i].base,
					     phys_port);

		RCU_INIT_POINTER(reprs->reprs[phys_port], repr);
		nfp_info(app->cpp, "Phys Port %d Representor(%s) created\n",
			 phys_port, repr->name);
	}

	nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, reprs);

	/* The REIFY/MAC_REPR control messages should be sent after the MAC
	 * representors are registered using nfp_app_reprs_set().  This is
	 * because the firmware may respond with control messages for the
	 * MAC representors, f.e. to provide the driver with information
	 * about their state, and without registration the driver will drop
	 * any such messages.
	 */
	atomic_set(replies, 0);
	reify_cnt = nfp_flower_reprs_reify(app, NFP_REPR_TYPE_PHYS_PORT, true);
	if (reify_cnt < 0) {
		err = reify_cnt;
		nfp_warn(app->cpp, "Failed to notify firmware about repr creation\n");
		goto err_reprs_remove;
	}

	err = nfp_flower_wait_repr_reify(app, replies, reify_cnt);
	if (err)
		goto err_reprs_remove;

	nfp_ctrl_tx(app->ctrl, ctrl_skb);

	return 0;
err_reprs_remove:
	reprs = nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, NULL);
err_reprs_clean:
	nfp_reprs_clean_and_free(app, reprs);
err_free_ctrl_skb:
	kfree_skb(ctrl_skb);
	return err;
}

static int nfp_flower_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
				 unsigned int id)
{
	if (id > 0) {
		nfp_warn(app->cpp, "FlowerNIC doesn't support more than one data vNIC\n");
		goto err_invalid_port;
	}

	eth_hw_addr_random(nn->dp.netdev);
	netif_keep_dst(nn->dp.netdev);
	nn->vnic_no_name = true;

	return 0;

err_invalid_port:
	nn->port = nfp_port_alloc(app, NFP_PORT_INVALID, nn->dp.netdev);
	return PTR_ERR_OR_ZERO(nn->port);
}

static void nfp_flower_vnic_clean(struct nfp_app *app, struct nfp_net *nn)
{
	struct nfp_flower_priv *priv = app->priv;

	if (app->pf->num_vfs)
		nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_VF);
	nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PF);
	nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PHYS_PORT);

	priv->nn = NULL;
}

static int nfp_flower_vnic_init(struct nfp_app *app, struct nfp_net *nn)
{
	struct nfp_flower_priv *priv = app->priv;
	int err;

	priv->nn = nn;

	err = nfp_flower_spawn_phy_reprs(app, app->priv);
	if (err)
		goto err_clear_nn;

	err = nfp_flower_spawn_vnic_reprs(app,
					  NFP_FLOWER_CMSG_PORT_VNIC_TYPE_PF,
					  NFP_REPR_TYPE_PF, 1);
	if (err)
		goto err_destroy_reprs_phy;

	if (app->pf->num_vfs) {
		err = nfp_flower_spawn_vnic_reprs(app,
						  NFP_FLOWER_CMSG_PORT_VNIC_TYPE_VF,
						  NFP_REPR_TYPE_VF,
						  app->pf->num_vfs);
		if (err)
			goto err_destroy_reprs_pf;
	}

	return 0;

err_destroy_reprs_pf:
	nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PF);
err_destroy_reprs_phy:
	nfp_reprs_clean_and_free_by_type(app, NFP_REPR_TYPE_PHYS_PORT);
err_clear_nn:
	priv->nn = NULL;
	return err;
}

static void nfp_flower_wait_host_bit(struct nfp_app *app)
{
	unsigned long err_at;
	u64 feat;
	int err;

	/* Wait for HOST_ACK flag bit to propagate */
	err_at = jiffies + msecs_to_jiffies(100);
	do {
		feat = nfp_rtsym_read_le(app->pf->rtbl,
					 "_abi_flower_combined_features_global",
					 &err);
		if (time_is_before_eq_jiffies(err_at)) {
			nfp_warn(app->cpp,
				 "HOST_ACK bit not propagated in FW.\n");
			break;
		}
		usleep_range(1000, 2000);
	} while (!err && !(feat & NFP_FL_FEATS_HOST_ACK));

	if (err)
		nfp_warn(app->cpp,
			 "Could not read global features entry from FW\n");
}

static int nfp_flower_sync_feature_bits(struct nfp_app *app)
{
	struct nfp_flower_priv *app_priv = app->priv;
	int err;

	/* Tell the firmware of the host supported features. */
	err = nfp_rtsym_write_le(app->pf->rtbl, "_abi_flower_host_mask",
				 app_priv->flower_ext_feats |
				 NFP_FL_FEATS_HOST_ACK);
	if (!err)
		nfp_flower_wait_host_bit(app);
	else if (err != -ENOENT)
		return err;

	/* Tell the firmware that the driver supports lag. */
	err = nfp_rtsym_write_le(app->pf->rtbl,
				 "_abi_flower_balance_sync_enable", 1);
	if (!err) {
		app_priv->flower_en_feats |= NFP_FL_ENABLE_LAG;
		nfp_flower_lag_init(&app_priv->nfp_lag);
	} else if (err == -ENOENT) {
		nfp_warn(app->cpp, "LAG not supported by FW.\n");
	} else {
		return err;
	}

	if (app_priv->flower_ext_feats & NFP_FL_FEATS_FLOW_MOD) {
		/* Tell the firmware that the driver supports flow merging. */
		err = nfp_rtsym_write_le(app->pf->rtbl,
					 "_abi_flower_merge_hint_enable", 1);
		if (!err) {
			app_priv->flower_en_feats |= NFP_FL_ENABLE_FLOW_MERGE;
			nfp_flower_internal_port_init(app_priv);
		} else if (err == -ENOENT) {
			nfp_warn(app->cpp,
				 "Flow merge not supported by FW.\n");
		} else {
			return err;
		}
	} else {
		nfp_warn(app->cpp, "Flow mod/merge not supported by FW.\n");
	}

	return 0;
}

static int nfp_flower_init(struct nfp_app *app)
{
	u64 version, features, ctx_count, num_mems;
	const struct nfp_pf *pf = app->pf;
	struct nfp_flower_priv *app_priv;
	int err;

	if (!pf->eth_tbl) {
		nfp_warn(app->cpp, "FlowerNIC requires eth table\n");
		return -EINVAL;
	}

	if (!pf->mac_stats_bar) {
		nfp_warn(app->cpp, "FlowerNIC requires mac_stats BAR\n");
		return -EINVAL;
	}

	if (!pf->vf_cfg_bar) {
		nfp_warn(app->cpp, "FlowerNIC requires vf_cfg BAR\n");
		return -EINVAL;
	}

	version = nfp_rtsym_read_le(app->pf->rtbl, "hw_flower_version", &err);
	if (err) {
		nfp_warn(app->cpp, "FlowerNIC requires hw_flower_version memory symbol\n");
		return err;
	}

	num_mems = nfp_rtsym_read_le(app->pf->rtbl, "CONFIG_FC_HOST_CTX_SPLIT",
				     &err);
	if (err) {
		nfp_warn(app->cpp,
			 "FlowerNIC: unsupported host context memory: %d\n",
			 err);
		err = 0;
		num_mems = 1;
	}

	if (!FIELD_FIT(NFP_FL_STAT_ID_MU_NUM, num_mems) || !num_mems) {
		nfp_warn(app->cpp,
			 "FlowerNIC: invalid host context memory: %llu\n",
			 num_mems);
		return -EINVAL;
	}

	ctx_count = nfp_rtsym_read_le(app->pf->rtbl, "CONFIG_FC_HOST_CTX_COUNT",
				      &err);
	if (err) {
		nfp_warn(app->cpp,
			 "FlowerNIC: unsupported host context count: %d\n",
			 err);
		err = 0;
		ctx_count = BIT(17);
	}

	/* We need to ensure hardware has enough flower capabilities. */
	if (version != NFP_FLOWER_ALLOWED_VER) {
		nfp_warn(app->cpp, "FlowerNIC: unsupported firmware version\n");
		return -EINVAL;
	}

	app_priv = vzalloc(sizeof(struct nfp_flower_priv));
	if (!app_priv)
		return -ENOMEM;

	app_priv->total_mem_units = num_mems;
	app_priv->active_mem_unit = 0;
	app_priv->stats_ring_size = roundup_pow_of_two(ctx_count);
	app->priv = app_priv;
	app_priv->app = app;
	skb_queue_head_init(&app_priv->cmsg_skbs_high);
	skb_queue_head_init(&app_priv->cmsg_skbs_low);
	INIT_WORK(&app_priv->cmsg_work, nfp_flower_cmsg_process_rx);
	init_waitqueue_head(&app_priv->reify_wait_queue);

	init_waitqueue_head(&app_priv->mtu_conf.wait_q);
	spin_lock_init(&app_priv->mtu_conf.lock);

	err = nfp_flower_metadata_init(app, ctx_count, num_mems);
	if (err)
		goto err_free_app_priv;

	/* Extract the extra features supported by the firmware. */
	features = nfp_rtsym_read_le(app->pf->rtbl,
				     "_abi_flower_extra_features", &err);
	if (err)
		app_priv->flower_ext_feats = 0;
	else
		app_priv->flower_ext_feats = features & NFP_FL_FEATS_HOST;

	err = nfp_flower_sync_feature_bits(app);
	if (err)
		goto err_cleanup;

	if (app_priv->flower_ext_feats & NFP_FL_FEATS_VF_RLIM)
		nfp_flower_qos_init(app);

	INIT_LIST_HEAD(&app_priv->indr_block_cb_priv);
	INIT_LIST_HEAD(&app_priv->non_repr_priv);
	app_priv->pre_tun_rule_cnt = 0;

	return 0;

err_cleanup:
	if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG)
		nfp_flower_lag_cleanup(&app_priv->nfp_lag);
	nfp_flower_metadata_cleanup(app);
err_free_app_priv:
	vfree(app->priv);
	return err;
}

static void nfp_flower_clean(struct nfp_app *app)
{
	struct nfp_flower_priv *app_priv = app->priv;

	skb_queue_purge(&app_priv->cmsg_skbs_high);
	skb_queue_purge(&app_priv->cmsg_skbs_low);
	flush_work(&app_priv->cmsg_work);

	if (app_priv->flower_ext_feats & NFP_FL_FEATS_VF_RLIM)
		nfp_flower_qos_cleanup(app);

	if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG)
		nfp_flower_lag_cleanup(&app_priv->nfp_lag);

	if (app_priv->flower_en_feats & NFP_FL_ENABLE_FLOW_MERGE)
		nfp_flower_internal_port_cleanup(app_priv);

	nfp_flower_metadata_cleanup(app);
	vfree(app->priv);
	app->priv = NULL;
}

static bool nfp_flower_check_ack(struct nfp_flower_priv *app_priv)
{
	bool ret;

	spin_lock_bh(&app_priv->mtu_conf.lock);
	ret = app_priv->mtu_conf.ack;
	spin_unlock_bh(&app_priv->mtu_conf.lock);

	return ret;
}

static int
nfp_flower_repr_change_mtu(struct nfp_app *app, struct net_device *netdev,
			   int new_mtu)
{
	struct nfp_flower_priv *app_priv = app->priv;
	struct nfp_repr *repr = netdev_priv(netdev);
	int err;

	/* Only need to config FW for physical port MTU change. */
	if (repr->port->type != NFP_PORT_PHYS_PORT)
		return 0;

	if (!(app_priv->flower_ext_feats & NFP_FL_NBI_MTU_SETTING)) {
		nfp_err(app->cpp, "Physical port MTU setting not supported\n");
		return -EINVAL;
	}

	spin_lock_bh(&app_priv->mtu_conf.lock);
	app_priv->mtu_conf.ack = false;
	app_priv->mtu_conf.requested_val = new_mtu;
	app_priv->mtu_conf.portnum = repr->dst->u.port_info.port_id;
	spin_unlock_bh(&app_priv->mtu_conf.lock);

	err = nfp_flower_cmsg_portmod(repr, netif_carrier_ok(netdev), new_mtu,
				      true);
	if (err) {
		spin_lock_bh(&app_priv->mtu_conf.lock);
		app_priv->mtu_conf.requested_val = 0;
		spin_unlock_bh(&app_priv->mtu_conf.lock);
		return err;
	}

	/* Wait for fw to ack the change. */
	if (!wait_event_timeout(app_priv->mtu_conf.wait_q,
				nfp_flower_check_ack(app_priv),
				NFP_FL_REPLY_TIMEOUT)) {
		spin_lock_bh(&app_priv->mtu_conf.lock);
		app_priv->mtu_conf.requested_val = 0;
		spin_unlock_bh(&app_priv->mtu_conf.lock);
		nfp_warn(app->cpp, "MTU change not verified with fw\n");
		return -EIO;
	}

	return 0;
}

static int nfp_flower_start(struct nfp_app *app)
{
	struct nfp_flower_priv *app_priv = app->priv;
	int err;

	if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG) {
		err = nfp_flower_lag_reset(&app_priv->nfp_lag);
		if (err)
			return err;
	}

	err = flow_indr_dev_register(nfp_flower_indr_setup_tc_cb, app);
	if (err)
		return err;

	err = nfp_tunnel_config_start(app);
	if (err)
		goto err_tunnel_config;

	return 0;

err_tunnel_config:
	flow_indr_dev_unregister(nfp_flower_indr_setup_tc_cb, app,
				 nfp_flower_setup_indr_tc_release);
	return err;
}

static void nfp_flower_stop(struct nfp_app *app)
{
	nfp_tunnel_config_stop(app);

	flow_indr_dev_unregister(nfp_flower_indr_setup_tc_cb, app,
				 nfp_flower_setup_indr_tc_release);
}

static int
nfp_flower_netdev_event(struct nfp_app *app, struct net_device *netdev,
			unsigned long event, void *ptr)
{
	struct nfp_flower_priv *app_priv = app->priv;
	int ret;

	if (app_priv->flower_en_feats & NFP_FL_ENABLE_LAG) {
		ret = nfp_flower_lag_netdev_event(app_priv, netdev, event, ptr);
		if (ret & NOTIFY_STOP_MASK)
			return ret;
	}

	ret = nfp_flower_internal_port_event_handler(app, netdev, event);
	if (ret & NOTIFY_STOP_MASK)
		return ret;

	return nfp_tunnel_mac_event_handler(app, netdev, event, ptr);
}

const struct nfp_app_type app_flower = {
	.id		= NFP_APP_FLOWER_NIC,
	.name		= "flower",

	.ctrl_cap_mask	= ~0U,
	.ctrl_has_meta	= true,

	.extra_cap	= nfp_flower_extra_cap,

	.init		= nfp_flower_init,
	.clean		= nfp_flower_clean,

	.repr_change_mtu  = nfp_flower_repr_change_mtu,

	.vnic_alloc	= nfp_flower_vnic_alloc,
	.vnic_init	= nfp_flower_vnic_init,
	.vnic_clean	= nfp_flower_vnic_clean,

	.repr_preclean	= nfp_flower_repr_netdev_preclean,
	.repr_clean	= nfp_flower_repr_netdev_clean,

	.repr_open	= nfp_flower_repr_netdev_open,
	.repr_stop	= nfp_flower_repr_netdev_stop,

	.start		= nfp_flower_start,
	.stop		= nfp_flower_stop,

	.netdev_event	= nfp_flower_netdev_event,

	.ctrl_msg_rx	= nfp_flower_cmsg_rx,

	.sriov_enable	= nfp_flower_sriov_enable,
	.sriov_disable	= nfp_flower_sriov_disable,

	.eswitch_mode_get  = eswitch_mode_get,
	.dev_get	= nfp_flower_dev_get,

	.setup_tc	= nfp_flower_setup_tc,
};